What human need do bridges meet?

Can scientist use satellite images to see mountain tops and deep ocean trenches on Earth.? Can you take pictures in the tate modern? What is the island in San Francisco Bay? When was seaworld made? During what years was Alkatraz operational as a prison? What are the sticky up bits on castle walls? What is the name and width of the largest falls at niagara falls? What type of current is caused by wind on the oceans surface? In which ocean is the island of St Helena placed? Who would be especially welcome at Appalachian get together s in the days before radio and television? Was Thomas Jefferson Buried in Arlington National cemetery? Which museum used to be a train station? Which coast leeward or windward usually has cooler temperatures? Why do you want to work in river island? Where is the missing part of Half Dome? What type of fish can be caught in the Brazos River? How many stairs from Altos De Chavon village down to the river of Chavon? What political purpose did the Palace of Versailles serve? Can you drive from Nebraska to California going through only 2 states? How many tourists visit mount Everest each month?